76 citations · 1.3k across the 130 of their papers we have counts for
76 papers · 1 filter
Primordial Black Hole Assisted Dirac Leptogenesis
Marco Manno, Anish Ghoshal
Dirac leptogenesis offers a qualitatively different route to the baryon asymmetry: total lepton number is conserved, but equal and opposite asymmetries are stored in the Standard M…
Particle production from bubble collisions
Anish Ghoshal, Pratyay Pal, Alessandro Strumia
Collisions of ultra-relativistic bubbles during cosmological phase transitions can produce particles much heavier than the transition scale. Previous analyses modelled this process…
Induced Multi-phase Inflation with Reheating: Leptogenesis and Dark Matter Production in Metric versus Palatini
Nilay Bostan, Rafid H. Dejrah, Anish Ghoshal +1
We study non-minimally coupled scalar-induced multi-phase inflation in metric and Palatini gravity, considering linear, Brans-Dicke-like, and Higgs-like sectors. The scalar spectra…
CMB signatures of gravity-mediated dark radiation in
Anish Ghoshal, Sk Jeesun, Kazunori Kohri
Measurement of in the CMB (Cosmic Microwave Background) observations, like Planck 2018 and BBN (Big Bang Nucleosynthesis) has already set stringent constraints on the…
Irreducible Gravitational Wave Background as a Particle Detector
Anish Ghoshal, Angus Spalding, Graham White
Beyond the standard model particles can imprint a temporary early matter-dominated epoch on a stochastic gravitational-wave background. For a freely propagating background whose pr…
Primordial Magnetogenesis and Gravitational Waves from ALP-assisted Phase Transition
Pankaj Borah, P. S. Bhupal Dev, Anish Ghoshal
Sufficiently strong first-order phase transitions (FOPTs) in the early Universe can simultaneously produce an observable stochastic gravitational wave background (SGWB) and a large…